<!-- 静态路由页面 -->
<template>
    <div id="aCoursesList" class="bg-fa of">
        <!-- /课程列表 开始 -->
        <section class="container">
            <header class="comm-title">
                <h2 class="fl tac">
                    <span class="c-333">全部课程</span>
                </h2>
            </header>
            <section class="c-sort-box">
                <section class="c-s-dl">
                    <dl>
                        <dt>
                            <span class="c-999 fsize14">课程类别</span>
                        </dt>
                        <dd class="c-s-dl-li">
                            <ul class="clearfix">
                                <li>
                                    <a title="全部" href="javascript:void(0);" @click="searchOne('')">全部</a>
                                </li>
                                <li v-for="(item, index) in subjectNestedList" v-bind:key="index"
                                    :class="{ active: oneIndex == index }">
                                    <a :title="item.title" href="javascript:void(0);" @click="searchOne(item.id, index)">{{
                                        item.title }}</a>
                                </li>
                            </ul>
                        </dd>
                    </dl>
                    <dl>
                        <dt>
                            <span class="c-999 fsize14" />
                        </dt>
                        <dd class="c-s-dl-li">
                            <ul class="clearfix">
                                <li v-for="(item, index) in subSubjectList" v-bind:key="index"
                                    :class="{ active: twoIndex == index }">
                                    <a :title="item.title" href="javascript:void(0);" @click="searchTwo(item.id, index)">{{
                                        item.title }}</a>
                                </li>
                            </ul>
                        </dd>
                    </dl>
                    <div class="clear" />
                </section>
                <div class="js-wrap">
                    <section class="fr">
                        <span class="c-ccc">
                            <i class="c-master f-fM">1</i>/
                            <i class="c-666 f-fM">1</i>
                        </span>
                    </section>
                    <section class="fl">
                        <ol class="js-tap clearfix">
                            <li :class="{ 'current bg-orange': buyCountSort != '' }">
                                <a title="销量" href="javascript:void(0);" @click="searchBuyCount()">销量
                                    <span :class="{ hide: buyCountSort == '' }">↓</span>
                                </a>
                            </li>
                            <li :class="{ 'current bg-orange': gmtCreateSort != '' }">
                                <a title="最新" href="javascript:void(0);" @click="searchGmtCreate()">最新
                                    <span :class="{ hide: gmtCreateSort == '' }">↓</span>
                                </a>
                            </li>
                            <li :class="{ 'current bg-orange': priceSort != '' }">
                                <a title="价格" href="javascript:void(0);" @click="searchPrice()">价格&nbsp;
                                    <span :class="{ hide: priceSort == '' }">↓</span>
                                </a>
                            </li>
                        </ol>
                    </section>
                </div>


                <!-- 热门课程展示开始 -->
                <div class="mt40">
                    <!-- /无数据提示 开始-->
                    <section class="no-data-wrap" v-if="data.total == 0">
                        <em class="icon30 no-data-ico">&nbsp;</em>
                        <span class="c-666 fsize14 ml10 vam">没有相关数据，小编正在努力整理中...</span>
                    </section>
                    <!-- /无数据提示 结束-->
                    <!-- 数据列表 开始-->
                    <article v-if="data.total > 0" class="comm-course-list">
                        <ul id="bna" class="of">
                            <li v-for="item in data.items" :key="item.id">
                                <div class="cc-l-wrap">
                                    <section class="course-img">
                                        <img :src="item.cover" class="img-responsive" alt="听力口语">
                                        <div class="cc-mask">
                                            <a :href="'/course/' + item.id" title="开始学习" class="comm-btn c-btn-1">开始学习</a>
                                        </div>
                                    </section>
                                    <h3 class="hLh30 txtOf mt10">
                                        <a :href="'/course/' + item.id" :title="item.title"
                                            class="course-title fsize18 c-333">{{ item.title }}</a>
                                    </h3>
                                    <section class="mt10 hLh20 of">
                                        <span v-if="Number(item.price) === 0" class="fr jgTag bg-green">
                                            <i class="c-fff fsize12 f-fA">免费</i>
                                        </span>
                                        <span class="fl jgAttr c-ccc f-fA">
                                            <i class="c-999 f-fA">{{ item.viewCount }}人学习</i>
                                            |
                                            <i class="c-999 f-fA">9634评论</i>
                                        </span>
                                    </section>
                                </div>
                            </li>
                        </ul>
                        <div class="clear" />
                    </article>
                    <!-- /数据列表 结束-->
                </div>
                <!-- 热门课程展示结束 -->



                <!-- 公共分页 开始 -->
                <div>
                    <div class="paging">
                        <!-- undisable这个class是否存在，取决于数据属性hasPrevious -->
                        <a :class="{ undisable: !data.hasPrevious }" href="#" title="首页" @click.prevent="gotoPage(1)">首</a>
                        <a :class="{ undisable: !data.hasPrevious }" href="#" title="前一页"
                            @click.prevent="gotoPage(data.current - 1)">&lt;</a>
                        <a v-for="page in data.pages" :key="page"
                            :class="{ current: data.current == page, undisable: data.current == page }" :title="'第' + page + '页'"
                            href="#" @click.prevent="gotoPage(page)">{{ page }}</a>
                        <a :class="{ undisable: !data.hasNext }" href="#" title="后一页"
                            @click.prevent="gotoPage(data.current + 1)">&gt;</a>
                        <a :class="{ undisable: !data.hasNext }" href="#" title="末页"
                            @click.prevent="gotoPage(data.pages)">末</a>
                        <div class="clear" />
                    </div>
                </div>
                <!-- 公共分页 结束 -->




            </section>
        </section>
        <!-- /课程列表 结束 -->
    </div>
</template>
<script>
import course from '@/api/course'

export default {

    data() {
        return {
            page: 1,
            data: {},
            subjectNestedList: [], // 一级分类列表
            subSubjectList: [], // 二级分类列表
            searchObj: {}, // 查询表单对象
            oneIndex: -1,
            twoIndex: -1,
            buyCountSort: "",
            gmtCreateSort: "",
            priceSort: ""
        }
    },

    //加载完渲染时
    created() {
        //获取课程列表
        this.initCourse()

        //获取分类
        this.initSubject()
    },

    methods: {
        //查询课程列表
        initCourse() {
            course.getPageList(1, 8, this.searchObj).then(response => {
                this.data = response.data.data
            })
        },
        //查询所有一级分类
        initSubject() {
            //debugger
            course.getNestedTreeList2().then(response => {
                this.subjectNestedList = response.data.data.items
            })
        },

        //点击一级分类，显示对应的二级分类，查询数据
        searchOne(subjectParentId, index) {
            //debugger
            this.oneIndex = index
            this.twoIndex = -1

            this.searchObj.subjectId = "";
            this.subSubjectList = [];

            this.searchObj.subjectParentId = subjectParentId;
            this.gotoPage(this.page)

            for (let i = 0; i < this.subjectNestedList.length; i++) {
                if (this.subjectNestedList[i].id === subjectParentId) {
                    this.subSubjectList = this.subjectNestedList[i].children
                }
            }
        },

        //点击二级分类，查询数据
        searchTwo(subjectId, index) {
            this.twoIndex = index
            this.searchObj.subjectId = subjectId;
            this.gotoPage(this.page)
        },
        //购买量查询
        searchBuyCount() {
            this.buyCountSort = "1";
            this.gmtCreateSort = "";
            this.priceSort = "";
            this.searchObj.buyCountSort = this.buyCountSort;
            this.searchObj.gmtCreateSort = this.gmtCreateSort;
            this.searchObj.priceSort = this.priceSort;
            this.gotoPage(this.page)
        },
        //更新时间查询
        searchGmtCreate() {
            debugger
            this.buyCountSort = "";
            this.gmtCreateSort = "1";
            this.priceSort = "";
            this.searchObj.buyCountSort = this.buyCountSort;
            this.searchObj.gmtCreateSort = this.gmtCreateSort;
            this.searchObj.priceSort = this.priceSort;
            this.gotoPage(this.page)
        },
        //价格查询
        searchPrice() {
            this.buyCountSort = "";
            this.gmtCreateSort = "";
            this.priceSort = "1";
            this.searchObj.buyCountSort = this.buyCountSort;
            this.searchObj.gmtCreateSort = this.gmtCreateSort;
            this.searchObj.priceSort = this.priceSort;
            this.gotoPage(this.page)
        },
        //分页查询
        gotoPage(page) {
            this.page = page
            course.getPageList(page, 8, this.searchObj).then(response => {
                this.data = response.data.data
            })
        }
    }
}
</script>
<style scoped>
.active {
    background: #bdbdbd;
}

.hide {
    display: none;
}

.show {
    display: block;
}
</style>
